Forging hammer



p 7, 1943- 5G. EPPENS 2,328,969

FORGING HAMMER Filed June 6, 1941 INVENTOR Ernest 6120 019215.

H\5 ATTORNEY.

t vertical type. i t z g l One object of the invention is to assurev a rigid n structure capable of fully withstanding the shocksandj'ars to .whichyit is subjectedduringa 'forging'operation.

ment of the parts constituting/the frame of the 1 Other objects will be in part pointed out hereinafter.

refer to similar parts,

of the invention,

on the line 4-4 in Figure by bolts 23.

thereto in any suitablemanner.

'1 "ration'of New Jersey y u 1 sesam -mime E r nest r. Elppen s, Alpha; N. JQ assignor to Inger soll-Rand Company, New York, p

Application-Tuned, 19 41, Seri ,823 p V.

(Cl. 78-43) I y t fQ p ai This invention relates'toforging" hammers, and more particularly to forging Another object is to relative move,-

jforging'hammer. t l partobvious and in In the drawingaccompanymg this specifica-- hammers of the tion and in which similar reference numerals Figure 1 is a front elevation of a forging hammer constructed in accordance withthe practice Figure z is an tlevation, partlyl brok en away,

i of the powerelement of the forging hammer, 1'-

Figure 3 is a transverse view taken through Figure 1 on the line 3-4, and l Figure 4 is a view similar to Figure 3 taken Referring more particularly to the drawing,

the forging hammen'designated in general by p 20, comprises a pair of columns 2| that rest upon abase member 22 and are secured thereto The columns, 2| are suitably spaced with rep spect to each other andform'the sides of aguidel way 24 for reciprocatoryhammer 25. The sides of the hammer 25 slidably engage guide members 26 on the columns and carries a die 21 that cooperates with a stationary die'28 on the base i member 22 for forging thework.

t :1 that carries a depending rod-33 attached at its I lower end to the hammer 25.

The pressure fluid supply for, actuating the piston 32 is distributed to the ends of the piston chamber 3| 'by suitable valve mechanism, only the valve chest 34of which is shown, and motion In accordance with the practiceof the-inven tion, means, are provided toassure a high degree of rigidityrof the frametelementswnecessary to prevent a weaving actionythereof and aconse quent misalignment and undue wear of the, re-

ciprocatory parts of the hammer and of the elements serving as guides for these elements. To this end the columns areprovided with introverted \walls31 at their sides to overlie the guideway 24. i The' walls 31 are? of substantial height and are provided' at their innermost ends with flanges 38 having surfaces 39 that seat against each other and are drawn securely together by bolts 40 extending through the flanges 38. aration of the columns 2| bysuch forces as may be applied laterally thereto by the hammer n tie bolts 4| are extended through both columns 7 2| and'have nuts 42 threaded on their ends to seat on the sides of the columns. Preferably,

sleeveextensions 43 are formed on the columns to encase the portions of the bolt 4| spanning the guideway 24, and the opposed ends of the sleeve extensions 43 seat against each other to prevent springing of the columns when threading the nuts 42 into clamping position.

The bolts 4| are of ample, strength to fully resist the side thrust of the hammer against the columns and are preferably located at some distance below the walls 31 to prevent the imposi- -tions of undue strains upon the bolts in the flanges 38. v i

In order to preclude any relative vertical movement of the flanges 38, tapered recesses 44 are formed in the surfaces 39 to register with each other for the accommodation of a tapered pin 45 having a threaded end 46 for the accommodation of a nut 41 whereby the tapered pin may be drawn firmly into the recesses, If desired, a plurality of recesses 44 and pins 45 may be used at different elevations in the surfaces 39, inthe manner more particularly illustrated in Figure 1. Means are also provided to prevent lateral movement of the flanges 38 with respect to each other. To this end one of the flanges is provided with a longitudinally extending rib 48 that seats into a groove 43 in the adjacent flange.

is transmitted to such valve: mechanism from The the cam surfaces 36 for actuating the valve mech- From the foregoing description it will be readily apparent that by interlocking the flanges 38 together the upper portions of the columns will be restrained against lateral movementand that they'will, therefore, be prevented from assuming a-position that would cause the reciprocatory elements of the hammer to be deflected from the normal path of movement. 7

In order to further assure against the sep- In order, however, to still further assure against the possible misalignment of the reciprocatory elements of the hammer the cylinder is provided, on the portion lying below the flange 39, with an external cylindrical surface 5c that 1 extends into a bore 5! in the upper ends of the columns 2!. By thus placing the cylinder 29 in telescopic engagement With the upper portions of the columns '2! and Joysecuring the upper portion of the columns rigidly together, in the manner hereinbefore described, the frame elements of the hammer will be securely held against rel-""' ative movement and the chances of imposing binding strains upon the reciprocatory elements of the hammer will be entirelyavoided.

I claim:

1. A forging hammer, comprising a pair of colums spaced to form a guideway, introverted Walls on the columns above the guideway havingventical surfaces to engage each other, means for clamping said surfacestcgether, means for preventing relative v-ertica1 'rnover-nent ofthe walls,

portions onthewalls"interlcckingly engaging each other to preveritrelative lateral movement-of the columns,;a cylinder ;-on the columns, cylindrical surfaces-on the cylinder and the -columns cospera-ting with "each other for maintaining the cylinder in axial alignment with-the 'guideway, a

piston in the cylinder having a rod, and "a nammer cu -the rod slidable in the guideway.

- u mns cooperating with each other for maintaining the cylinder in axial alignment with the Jg'uideway, a piston in the cylinder having a rod, rand a'han mer on the rod slidable in the guidehy f J l 3' A for ging hammer, comprising a pair of columns spaced to form a guideway, introverted iwalls'on the sides-of the columns-having vertical surfaces to engage each other, ribs on the walls interlockingly engaging each other to prevent relative filateral movement .-of xthe .colunms', .pins inthe walls' .-to prevent relative endwise move.- ment of the columns, bolts for clampingithe Walls together, a :cylizideruon the columns having an: external ,cylindric'al surface, itheressbeing a cylindricalibore in the upper ends ofsthe .columns to receive the cylindrical surface, a, pistzin :in the cylinder having a rod, .and cl-hammer on the rod slidable incthelguideway.a

ERNESTG; :EPRENS; 

